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Specification of .Letters Patent No. 10,900, dated May 9*, 1854.

T0 all whom t may concern p Be it known that I, ENooH WooLMAN., of Damascoville, in the county of Columbiana and State of Ohio, have invented certain new and useful Improvements in Hinges; and I do hereby declare that the same are described and represented in the following specifications and drawings:

To enable others skilled in the art to make and use my improvements I will proceed to describe their construction and operation, referring to the drawings, in which the same letters indicate like parts in each of the igures.

Figure l, is an elevation of a gate pro4 In these drawings A is a gate hung to` the post B by a hinge of the ordinary construction with a long pivot at the bottom, and with one of my improved hinges at the top: in which hinge C is the st-and fastened to the post B by screws or otherwise, and provided with` a long pivot D upon which the revolving plat-e E, fastened to the gate by screws or otherwise turns, as the gate A. is opened or closed. The plate E is provided with `two inclined planes H H ter-i minating in the score F, each of which planes is provided with two short scores G G extending about half way across the inclined planes H H as represented in Fig. 5.

The roller I is made in the form represented and provided with a shaft or pivots `a a fitted to turn in scores provided for them in the stand or slide b which slide is fitted to traverse in the dovetailed score e, in the stand c when it is operated by the pivot f,

of the lever J; which vibrates upon the` pin 7c in the post B; a mortise being provided in the post for the lever as represented by dotted lines in Fig. 1.

Now while the lever J and roller I remain in the position in which they arerepresented in Fig. l, so that, those portions of the inclined planes H H which have no scores across them rest and traverse upon move the roller I toward the pivot D and let the interior portions of the inclined planes fH, rest` on the roller I so `that when the gate is partially opened the score G will embrace the roller I, and the gate will remain in that position, until suflicient force is applied to it, to force the score from` the roller, or if the gatel is opened so that the score Gr embraces the `roller I the gate will remain open until suflicient force is applied to it to remove the score from the roller I. Thus by operating the lever and traversing the roller the hinge is made to retain the gate open or partially open. If the roller I is made nearer to one pivot than the other as represented and the slide which supports the pivots is placed in a proper position, the hinge may be changed from a self shutting to a self retaining hinge when the gate lis open by taking the roller I out and re,

v ersng it and putting it in again in the posltlon represented in Fig. 4,' thereby chang- `ing the roller from that portion `of the inclined planes which has not scores to the portion which has.

It will be apparent from the above description that the hinge may be changed from a self shutting to a self retaining hinge when open either by traversing the slide which carries the roller, or by reversing the roller and if the latter mode should be preferred, the supports for the pivots of the roller may be made permanent upon the stand C.

This hinge may be applied to doors or windows and used as a self shutting hinge in cold weather, and as a self retaining hinge when open or partially open in warm weather.

I contemplate that hinges with my improvementsmay be modified in various ways to adapt them to such peculiar circumstances as it may be desirable to use them in, without departing from the principles or merits of my invention, also that such a number of scores may be made in the exterior portion of the inclined planes as may be necessary or desirable.

What I claim as my invention and desire self retaining When open or partially open to secure by Letters Patent in the abovesubstantially as described. 10 described hinge is- In testimony whereof I haveA hereunto Making and arranging the roller I so that signed myy name.

5 it can be traversed toward and from the' Y ENOCH WOOLMAN.

pivot of the hinge in combination With the Y Witnesses: scores G G in the inclined planes, so that ALEX. M. SPRAGUE, it can be used either as val self shutting `or A J.DErIrIIsyJr.fr Y 

